2013-07-23

8 Myths about Lightning (Slideshow)

SelectaDNA Spray, as it is called, coats robbers with an invisible DNA mist that cannot be washed off and remains present on skin and hair for weeks, allowing authorities to better link culprits to the crimes they commit.

Cancer patients who receive radiation of their thyroid glands by being given radioactive iodine are highly radioactive for up to a week following their release from the hospital -- and they end up irradiating not just hospital rooms but also other patients, friends and family members. Radiation levels are so high in these people that they have set off radiation alarms designed to detect terrorist threats, says a congressional report.